Hey guys. Im 17 and just got my Stang about a month ago. Wanna do something to sound beefier but on a budget. I know everyones gonna say H pipe and Flowmasters but I would like to keep it the Y pipe and a single exit. Thinking of getting a single Flowmaster 40 or 44 and something like a 3.5 chrome tip. I think that would sound good. Open to any suggestions, though. Help me out! Thanks.
Just changing the muffler will only give you a louder/better sound, as Dave suggested. But it seems this is all you want... :shigrin
So, I would recommend a muffler with only 2-chambers (Flowmaster 40s) or a reverse-flow design ("turbo mufflers", like Thrush turbo) so that you get the loudest sound without sounding "farty". :laugh: If you really want something different, look into Flowmaster HP-2s and Super 10s...
As a side note, a true dual exhaust does not have to be all that expensive: I have a divorced dual exhaust with two Flowtech glasspacks that only cost me under $50! I just did all the labor myselft, cut the pipes after the cats (right before the bends), and clamped them on.

It's probably not the best sound, but it's the most (street-legal) performance gain.